In the regime of larger frustration, however, this suppression does not occur, which is due to the abundance of negative weights, making it likely for a switching subset of a large cardinality to still produce a small sum through the cancellation of positive and negative weights. It is then probable that the distance between the ground state and the first excited state to be far for a highly frustrated RBM. This is, in fact, a general feature of spin glasses with typical graph structures [1]}.
